Why can't I change my photo/ avatar on Yahoo Answers?

can u give me some real answers?

Update: I went to the 360 profile did all the steps added the photo... then made it my 360 profile it appears as my 360 profile... then i go to Yahoo Answers and it's still the same avatar... then i exit my 360 profile check it again and it's the same it didnt change... whats wrong?
Why wont it change my photo?